Precast sludge tank roof panel with removable grate



FIG. 1 is a top plan view of a precast roof panel with removable grate showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevation thereof;

FIG. 4 is a front elevation thereof; and,

FIG. 5 is a rear elevation thereof as seen from the opposite of FIG. 4. 

The ornamental design for precast sludge tank roof panel with removable grate, as shown. 